Altitude and temperature of the mesopause at 69°N latitude in winter
Altitude and temperature of the mesopause at 69°N latitude in winter
复制标题
冬季北纬69°中层顶的海拔高度和温度
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
U. Zahn
中科院分区：
文献类型：
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作者：
R. Neuber;P. Gathen;U. Zahn
本文用激光激发自由钠原子D_2共振线的多普勒宽度测量方法，导出了80-110公里高度区域的温度分布。对于85-95 km的高度范围，单个温度点的高度分辨率、积分时间和误差条通常分别为1 km、10 min和±5 K。本文介绍了1985/1986和1986/1987两个冬季在挪威安德尼斯附近（69°N，16°E）获得的温度资料。对于12月至3月，743个温度廓线被合并为四个月平均廓线。在这4个月中，每一个月的中层顶高度为100±2公里。中层顶温度从12月到2月接近193 K，但在3月下降到170 K。我们在这两年的测量中发现了这一点。
Temperature profiles of the altitude region 80–110 km are derived from the measurement of the Doppler width of the laser-excited D2 resonance line of free sodium atoms. For the altitude range 85–95 km the altitude resolution, integration time, and error bar of individual temperature points are typically 1 km, 10 min, and ±5 K, respectively. Temperature data obtained during the two winter seasons 1985/1986 and 1986/1987 near Andenes, Norway (69°N, 16°E), are presented. For December–March, 743 temperature profiles are combined into four monthly mean profiles. For each of the 4 months the altitude of the mesopause is found to be 100±2 km. The mesopause temperature is close to 193 K from December through February but drops to 170 K in March. We found this in both years of our measurements.